| 基于激波拟合与柔性壁的反设计数值方法研究 |
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| 引用本文： | 吴晴,钟易成,胡骏,余少志.基于激波拟合与柔性壁的反设计数值方法研究[J].空气动力学学报,2009,27(2). |
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| 作者姓名： | 吴晴 钟易成 胡骏 余少志 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,江苏,南京,210016 |
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| 摘 要： | 将激波和待求激波压缩面作为运动间断边界拟合,研究了超声速来流下的型面反设计数值计算方法.算法秉承拟合法思想,采用二阶格式时间推进欧拉方程组,在运动边界和动网格条件下,按预估的波系结构划分网格块,反求可产生指定压力分布的三维型面,并获得精确的激波型面.通过包括凸包进气道在内的三个反设计算例验证了本文算法的合理性及其对网格质量的适应性,证明了在型面反设计中,采用激波拟合法可大大提高型面精度.本算法可用于超声速进气道压缩面和唇口完全三维反设计.
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| 关 键 词： | 激波拟合 柔性壁 运动间断条件 反设计数值方法 计算流体力学 |
Numerical method for shape inverse designbased on shock-fitting and flex-wall |
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| WU Qing,ZHONG Yi-cheng,HU Jun,YU Shao-zhi.Numerical method for shape inverse designbased on shock-fitting and flex-wall[J].Acta Aerodynamica Sinica,2009,27(2). |
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| Authors: | WU Qing ZHONG Yi-cheng HU Jun YU Shao-zhi |
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| Institution: | College of Energy and Power Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | A numerical simulation method for shape inverse design in supersonic flow field with foreknown shocks' sketch is presented in this paper,and shocks and flex-wall are fitted as moving discontinuities boundary condition.The algorithms is governed by spatial second-order accurate scheme time-dependent Euler equations on moving boundary and dynamic mesh,and computational domain is divided into several moving block meshes for multi-shocks geometry.Not only the corresponding shape producing the prescribed pressur... |
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